Artists made this mosque into a marvel of Ottoman baroque architecture.

A century-old hotspot for jazz, frequented by everyone from Charlie Chaplin to Al Capone.

A throwback train ride transports passengers through one of the lesser-known national parks in the country.

A record-size collection of wild-haired troll dolls tells the story of the mythical creature's roots in Scandinavian folklore.

"Where the ducks walk on fish."

The highest point in Indiana is curated by an Eagle scout but may be in danger of losing its record to a nearby garbage pile.

One tree's homage to soles past and present.

A collection of relics from the Spiritualist Camp Chesterfield.

Covered in tens of thousands of coats of paint, this Indiana attraction holds a world record all its own.

An opulent testament to the boom-and-bust history of industry in north central Indiana.

More than 100 years after his death, the world's largest steer is still attracting crowds.

A large collection of motorbikes with some impressive gems.

Indiana's oldest sternwheel paddleboat has been plying the placid waters of Webster Lake for 90 years.

A concrete block embedded with thousands of pulled teeth was created by a local dentist to memorialize his dog.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

An abandoned village that doubled as "The Hunger Games"' post-apocalyptic wasteland is up for grabs.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

A ghost town at the airport is now a refuge for blue butterflies.

A beautiful oddities shop crammed with strange and morbid curiosities.

A mechanized clock where a man fights off a dragon, crab, and rooster.